1. Klinefelter's Syndrome (only in males)
2. Symptoms of disease - sparse pubic, facial, and body hair, undeveloped muscles, enlarged breasts (gynecomastia), being taller than other males in their family, long legs, narrow shoulders, wide hips
3. This disease can be detected from when child is an infant to a teenager (when puberty occurs).
4. Can occur in approximately every 1 in 500 to 1,000 males.
5. Frequency of disease in the population
6. This inherited disease is recessive.
7. This disease is X-linked.
8. Someone with Klinefelter Syndrome has 47 chromosomes because there is one extra in the 23rd pair (XXY).
9. Testosterone treatments can be used for Klinefelter Syndrome, but must begin as males enter puberty. A regular schedule of testosterone injections will increase strength and muscle size, and promote the growth of facial and body hair.
10. The prognosis for Klinefelter syndrome is generally good, with most men leading full and active lives.
11. Androgen therapy, speech and behavioral therapy
12. A baby may have very low muscle tone (hypotonia), or small penis (micropenis) which may mean the baby has torticolis which is when it's head and neck are slightly twisted to one side.
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